Weft-replenishing mechanism for looms.



no. 7|6,373. Patented Dec. 23, 1902.

J. T. BOLTON.

WEFT REPLENISHING MECHANISM FOR LOUIS.

(Application filed Mar. 11. 1902.)

(No Model.)

Inventor;

Attorney;-

rrnn STATES PATENT OFFICE.

JOHN T. BOLTON, OF FALL RIVER, MASSACHUSETTS.

WlEFT-REPLENISHING MECHANISM FOR LOOMS.

SPECIFICATION formingpart Of Letters Patent N0. 716,373, dated December23, 1902.

Application filed March 11, 1902. Serial No. 97,723. (No model.)

To all 1072/0772, it ntay concern:

Be it known that 1, JOHN T. BOLTON, a resident of the city of FallRiver, in the county of Bristol and State of Massachusetts, haveinvented certain new and useful Improvements in VVeft-ReplenishingMechanism for Looms; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to the mechanism used on some looms to efiect thedisplacement of an empty bobbin of weft-thread and at the same timereplace it by a full one without interfering with the continuous runningof the loom.

The object of my invention is to obviate a difficulty met with inproviding a sufficient slack or loose thread between the full bobbin andthe end of the thread that is made fast to insure the threads drawingoff of the bobbin when the shuttle is thrown. The time when thislooseness of the weft-thread is required is when the bobbin whichcontains the thread is transferred from its place in the filling-carrierto the shuttle, the direction of the motion of the bobbinwhile beingtransferred being directly away from the center of the carrier, aroundwhich the ends of the weft-threads on the bobbins in the carrier areusually fastened. It is fully described in the following specificationand illustrated in the annexed drawings, in which- Figure 1 is a topView of the weft-carrier and the devices for producing the necessaryslackness of the weft with a part of the breast-beam to which thefilling mechanism is attached. Fig. 2 shows an end view of theweft-carrier with the outer thread-guide plate removed and part oftheshaft to show the contour of the slack-plate and its support.

The following is a description of the constructionand the way in whichthe device operates to obviate the difficulty.

In the drawings, H denotes the breast-beam of the loom. F is asupporting-plate for the filling-carrier, which consists of the twocircular plates A A, between which the full bobbins B are held inrecesses in the plates, and a plate J, fast on the outer end of theshaft that carries the plates A A, and with which the plate J turns,serving as a guide for the thread S. (See Fig. l.)

A plate D is held loosely on the shaft T of the filling-carrier, betweenthe plates A and J, and is kept from turning by an arm V, held looselyon a shaft P, that is held in a stud Kon the breast-beam H, or it may bea flat rim instead of a full plate. This plate D is made some larger indiameter than'the plates A A of the filling-carrier to increase thelength of the thread S between the plates A and J by carrying thethreads out farther. (See Fig. 1.) In Fig. 2, in which the outer plate Jis removed to show the plate D more fully, the lower edge of the plate Dis shown as being cut away, the gap starting from the point E andrunning out to full size on the front.

The object of the decrease of the diameter of the plate D at the point Eby means of the notch is to allow the thread of a bobbin to become slackjust before the bobbin reaches the transferring-point to give it thenecessary length of thread, as it is not possible to draw any from thebobbin at that time, to allow the bobbin to be struck down by the hammerM into the position shown by the dotted lines W when the lay L getsquite forward without being liable to break the thread, which it oftendoes, especially on fine goods. The full line shows the position of thelay on its way forward with the shuttle R to receive the full bobbin atthe moment the hammer M starts to force said bobbin down intothe-shuttle. It is plain that this breaking is caused by there not beingsufficient length of thread to admit of the change of position of thebobbin, and the notch in the plate D gives back in slack at the propertime the extra length of thread obtained by carrying it out around theplate D on the line S instead of on the straight dotted line S.

Having thus described my invention, What I claim, and desire to secureby Letters Patcut, is p 1. In a weft-filling mechanism, the combinationof a filling-holder, a stationary plate placed between thefilling-holder and the point of attachment of the end of thebobbinthreads at the end of the shaft, said plate having its outercircle reduced at its lower side to causeslack in the thread whichslides on its l with means for holding the larger plate from 10periphery, substantially as described. turning, substantially asdescribed.

2. In a weft-filling mechanism the combi- In testimony whereof I havehereunto set nation of afilling-holder, athread-guide plate i my handthis 10th day of March, A. D. 1902. with a point of attachment for thethread; a plate larger in diameter than the filling- JOHN BOLTON holderor the thread-guide plate located be- In presence of tween thefilling-holder and said guide-plate, BENJ. ARNOLD,

and provided with a notch on its lower side, i HOWARD E. BARLOW.

